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Commit cbb2a256 authored by Alan Stern's avatar Alan Stern Committed by Greg Kroah-Hartman
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USB: UHCI: report non-PME wakeup signalling for Intel hardware 



commit ccdb6be9ec6580ef69f68949ebe26e0fb58a6fb0 upstream.

The UHCI controllers in Intel chipsets rely on a platform-specific non-PME
mechanism for wakeup signalling.  They can generate wakeup signals even
though they don't support PME.

We need to let the USB core know this so that it will enable runtime
suspend for UHCI controllers.

Signed-off-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8ede2d79

drivers/usb/host/uhci-pci.c

+4 −0
Original line number Diff line number Diff line
@@ -129,6 +129,10 @@ static int uhci_pci_init(struct usb_hcd *hcd) 
	if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_HP)

		uhci->wait_for_hp = 1;



	/* Intel controllers use non-PME wakeup signalling */

	if (to_pci_dev(uhci_dev(uhci))->vendor == PCI_VENDOR_ID_INTEL)

		device_set_run_wake(uhci_dev(uhci), 1);



	/* Set up pointers to PCI-specific functions */

	uhci->reset_hc = uhci_pci_reset_hc;

	uhci->check_and_reset_hc = uhci_pci_check_and_reset_hc;